GEHR POM® C

GEHR POM® C is produced from the continuous operating temperature of this engineering plastic ranges between -40 °C and +100 °C. Based on its toughness combined with high dimensional stability, there is no tendency to stress cracking. The copolymer has high thermal stability and chemical resistance. In particular, the increased hydrolytic stability and resistance to contact with many solvents must be taken into account. This material is frequently found in applications in the food industry, as cleaning processes require resistance to the use of hot water or various chemical agents. Our round rods and sheets in natural or black color comply with the food contact regulations according to 10/2011/EC.

Properties

Physical Form: Bars, Custom, Rods, Sheets
Bars
Custom
Rods
Sheets

Other characteristics

Brand: GEHR POM
Color: Black, Natural
Black
Natural
Density: 1390.0 - 1390.0 kg/m³
Features: Chemical Resistant, Dimensional Stability, Electrically Insulating, Excellent Toughness, Good Environmental Stress Crack Resistance (ESCR), Good Sliding Properties, Good Solvent Resistance, Good Thermal Stability, High Hydrolytic Stability, High Rigidity, High Stiffness, High Strength, Low Water Absorption
Polymer Name: Polyacetal Copolymer (POM)
Odor: Odorless
Markets: Automotive & Transportation
Building & Construction
Electrical & Electronics
Food & Nutrition
Healthcare & Pharma
Industrial
Storage: The products shall be stored indoor to keep away from any source of degradation such as sunlight, UV-jets, ionizing radiation, chemicals.
Machining: The product can be machined with standard machinery and tools. Before machining the product should be stored at room temperature 24 h. Evacuate swarf to prevent slipping or tripping. Observe the maximum allowable concentration of dust and formaldehyd levels on the working area which apply in your country. Wear safety goggles during machining. General dust limit value: Respirable dust (6 mg/m3); Inhalable dust (10 mg/m3 ).
Properties: Pressure tested quality
High strength and stiffness
High rigidity (to -40 °C)
High thermal stability
Low water absorption
High dimension stability
Good electrical insulating properties
Very good sliding properties
Flame Rating: UL 94 HB
Insoluble In: Water
Technology: Plastics
Safety Measures: The general industrial safety measures should be considered. A thermal damage during machining should be avoided.
Product Families: Plastics — Parts, Shapes & Films
Form and Condition: Rods. Sheets. Hollow Rods / Solid
Material Features: Chemical Resistant; Dimensional Stability; Electrically Insulating; Excellent Toughness; Good Environmental Stress Crack Resistance (ESCR); Good Sliding Properties; Good Solvent Resistance; Good Thermal Stability; High Hydrolytic Stability; High Rigidity; High Stiffness; High Strength; Low Water Absorption

Technical data

Table 1 of 6

9 rows

Characteristic	Value	Unit	Method
Tensile Strength at Yield	67	MPa	ISO 527
Elongation at Yield (S)	22	%	ISO 527
Tensile Strength at Break	65	MPa	ISO 527
Elongation at Break (R)	28	%	ISO 527
Impact Strength (an)	No break	kJ/m2	ISO 179
Notch impact Strength (ak)	6	kJ/m2	ISO 179
Ball Indentation (Rockwell Hardness)	125	MPa	ISO 2039
Hardness	83	Shore D	ISO 868
Modulus of elasticity (Et)	2855	MPa	ISO 527

Table 2 of 6

5 rows

Characteristic	Value	Unit	Method
Specific Gravity	1.39	—	ISO 1183
Water Absorption	0.8	%	ISO 62
Humidity Absorption	0.2	%	ISO 62
Maximum Permissible Service Temperature	100	°C	UL746B
Lower Permissible Service Temperature	-40	°C	UL746B

Table 3 of 6

6 rows

Characteristic	Value	Unit	Method
Vicat Softening Point (VST/B/50)	150	°C	ISO 306
Heat Deflection Temperature (HDT/B)	155	°C	ISO 75
Heat Deflection Temperature (HDT/A)	95	°C	ISO 75
Coefficient of Linear Thermal Expansion	1.2	K-1.10-4	ISO 11359
Glass Transition Temperature (Tg)	-65	°C	ISO 3146
Melting Temperature (Tm)	166	°C	ISO 3146

Table 4 of 6

4 rows

Characteristic	Value	Unit
Density	1.39	g/cm³
Melting Temperature	160 - 175	°C
Thermal Decomposition	min. 240	°C
Ignition Temperature	320 - 340	°C

Table 5 of 6